Final answer:
The Spanish equivalent to the phrase 'They wait for him to come back' is 'Ellos esperan que él regrese'
Step-by-step explanation:
The correct Spanish equivalent to the phrase 'They wait for him to come back' is 'Ellos esperan que él regrese'. In Spanish, the verb 'esperar' means 'to wait', and the subject 'ellos' agrees with the plural form of the verb, which is 'esperan'. The object, 'him', is represented by the pronoun 'él', and the infinitive 'regresar' means 'to come back'.
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